// [Parameter] means that that parameter is optional, do not include []'s.

collection.filter(function); // function takes in 'value'
collection.clone(); // returns an exact same copy of current collection
collection.first([count]); // returns first x or first value of the collection
collection.firstKey([count]); // returns first x or first key of the collection
collection.array(); // array of collection values
collection.last([count]); // returns last x or first value of the collection
collection.lastKey([count]); // returns last x or first key of the collection
collection.deleteAll(); // calls delete method on all items of the collection
collection.every(function); // returns boolean, true if every item of the collection makes function returns true, function takes in 'value'
collecton.equals(collection2); // return boolean, true if collection2 and collection have a 100% key-vaue pairs matching
collection.keyArray(); // array of collection keys
collection.map(); // equal to Array.map();
collection.partition(function); // returns array of 2 collections, first collection item that passed function and second collection items that failed function ([collection1, collection2] or [passed, failed]), function takes in value
collection.random([count]); // returns array of 'count' random values from the collection, there can (and will be) duplicates (regardless of array length but more likely count represents a big portion of collection's size)
collection.randomKeys([count]); // returns array of 'count' random keys from the collection, there can (and will be) duplicates (regardless of array length but more likely count represents a big portion of collection's size)
collection.some(function); // returns true if at least 1 element of collection passed function, function takes in value
collection.find(function); // filters the collection and returns the first item value passing function, function takes in value